#35316: Support scalars as query parameters in admin changelist filters (for
backward compatibility).
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Reporter: m000 | Owner: nobody
Type: Uncategorized | Status: new
Component: contrib.admin | Version: 5.0
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 1
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 1
UI/UX: 0 |
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Ticket #1873 added support for multi-valued query parameters in admin
changelist filters. Because only list types are supported, older code that
e.g. extends SimpleListFilter or BooleanFieldListFilter will break.
The latter (extending BooleanFieldListFilter) may even be completely
unsupported. See notes in PR for #1873.
Overall, user code needs to introduce version conditionals if it is
required to support both Django 4.x and Django 5. The reason is that
Django 4.x only supports scalar types as query parameter values, while
Django 5 only supports lists.
Since supporting both scalars and lists should be possible without adding
complexity to the Django codebase, it would be good to continue supporting
scalars, perhaps with a deprecation warning, if necessary.
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Ticket URL: <https://code.djangoproject.com/ticket/35316>
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